Malicious PDF — malware analysis report

Static analysis result for SHA-256 57f650e2501deee7…

MALICIOUS

PDF

43.5 KB Created: 2021-05-16 02:01:14 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 9f283fac292173ffbe6c4a0044558932 SHA-1: 418acb81932c001873942dfbff7eb6ea2833be15 SHA-256: 57f650e2501deee734182a2c0c9b6478ee85ee1af3972697baa37450cb127b9a
122 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The document presents a fake CAPTCHA or human verification prompt to trick the user into clicking a malicious link. The primary link identified is https://netcdn.xyz/app/431946152/how-to-hack-any-roblox-account-game-hack, which likely leads to the download of a second-stage payload. The document body and embedded URLs suggest a lure related to hacking Roblox accounts for Robux.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

Heuristics 5

  • Fake CAPTCHA / human verification prompt high SE_FAKE_CAPTCHA
    Document displays a fake CAPTCHA or human-verification prompt — used to trick users into running commands or pressing keyboard shortcuts
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • External URI info PDF_URI
    PDF contains an external URL action
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://netcdn.xyz/app/431946152/how-to-hack-any-roblox-account-game-hack
    • https://elearning.mtsnegeri1mojokerto.sch.id/__statics/gudangsoal/files/how-to-hack-roblox-for-robux_GM431946152.pdf
    • https://elearning.mtsnegeri1mojokerto.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-codes_GM431946152.pdf
    • https://elearning.mtsnegeri1mojokerto.sch.id/__statics/gudangsoal/files/free-robux-with-no-human-verification_GM431946152.pdf
    • https://elearning.mtsnegeri1mojokerto.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-2021_GM431946152.pdf
    • https://elearning.mtsnegeri1mojokerto.sch.id/__statics/gudangsoal/files/give-me-free-robux_GM431946152.pdf
    • https://elearning.mtsnegeri1mojokerto.sch.id/__statics/gudangsoal/files/roblox-mobile-hack_GM431946152.pdf
    • https://elearning.mtsnegeri1mojokerto.sch.id/__statics/gudangsoal/files/roblox-games-to-play-for-free_GM431946152.pdf
    • https://elearning.mtsnegeri1mojokerto.sch.id/__statics/gudangsoal/files/daily-free-spins_GM406889139.pdf
    • https://elearning.mtsnegeri1mojokerto.sch.id/__statics/gudangsoal/files/aternos-free-minecraft-server_GM479516143.pdf
    • https://elearning.mtsnegeri1mojokerto.sch.id/__statics/gudangsoal/files/coin-master-apk-hack-2021_GM406889139.pdf
    • https://elearning.mtsnegeri1mojokerto.sch.id/__statics/gudangsoal/files/wwwcoin-master-free-spincom_GM406889139.pdf
    • https://elearning.mtsnegeri1mojokerto.sch.id/__statics/gudangsoal/files/coin-master-hack-tool-without-verification_GM406889139.pdf
    • https://elearning.mtsnegeri1mojokerto.sch.id/__statics/gudangsoal/files/free-robux-hack-generator_GM431946152.pdf
    • https://elearning.mtsnegeri1mojokerto.sch.id/__statics/gudangsoal/files/minecraft-fly-hack_GM479516143.pdf
    • https://elearning.mtsnegeri1mojokerto.sch.id/__statics/gudangsoal/files/coin-master-attack-block-hack_GM406889139.pdf
    • https://elearning.mtsnegeri1mojokerto.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-on-roblox-2021_GM431946152.pdf
    • https://elearning.mtsnegeri1mojokerto.sch.id/__statics/gudangsoal/files/legit-coin-master-hack_GM406889139.pdf
    • https://elearning.mtsnegeri1mojokerto.sch.id/__statics/gudangsoal/files/village-4-coin-master_GM406889139.pdf
    • https://elearning.mtsnegeri1mojokerto.sch.id/__statics/gudangsoal/files/free-spins-coin-master-cheats_GM406889139.pdf
    • https://elearning.mtsnegeri1mojokerto.sch.id/__statics/gudangsoal/files/coin-master-hack-twitter_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004c4b.bin
5a4851b26c8474b5568cd8fd0867e6047d3c0b928a70e0d0ac327489ef89c3e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4C4B 25228 bytes
font_01_sfnt_off00008618.bin
d5ac01ba848f85c7af00746e0b4ab9643e0d1d2f53353368de6e0e250a854553		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8618 18772 bytes

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